AU2020103900A4 - A structure for coupling an offshore floating wind turbine and a semi-submersible aquaculture platform - Google Patents

A structure for coupling an offshore floating wind turbine and a semi-submersible aquaculture platform Download PDF

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AU2020103900A4
AU2020103900A4 AU2020103900A AU2020103900A AU2020103900A4 AU 2020103900 A4 AU2020103900 A4 AU 2020103900A4 AU 2020103900 A AU2020103900 A AU 2020103900A AU 2020103900 A AU2020103900 A AU 2020103900A AU 2020103900 A4 AU2020103900 A4 AU 2020103900A4
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Prior art keywords
wind turbine
pontoon
column
anchor
semi
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AU2020103900A
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Chunwei Bi
Hangfei Liu
Yunpeng Zhao
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Dalian University of Technology
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Dalian University of Technology
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Priority to CN202010345584.1A priority patent/CN111348153A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00Culture of aquatic animals
    • A01K61/60Floating cultivation devices, e.g. rafts or floating fish-farms
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00Culture of aquatic animals
    • A01K61/60Floating cultivation devices, e.g. rafts or floating fish-farms
    • A01K61/65Connecting or mooring devices therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/24Anchors
    • B63B21/26Anchors securing to bed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/10Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy
    • B63B43/12Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy using inboard air containers or inboard floating members
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/442Spar-type semi-submersible structures, i.e. shaped as single slender, e.g. substantially cylindrical or trussed vertical bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4433Floating structures carrying electric power plants
    • B63B2035/446Floating structures carrying electric power plants for converting wind energy into electric energy
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/10Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy
    • B63B43/12Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy using inboard air containers or inboard floating members
    • B63B2043/126Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy using inboard air containers or inboard floating members pneumatic, e.g. inflatable on demand
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/60Fishing; Aquaculture; Aquafarming

Abstract

The invention provides a structure for coupling an offshore floating wind turbine and a semi-submersible aquaculture platform, including a main frame, a wind turbine, 5 a control room, fish nets and an anchor system. The main frame includes a central column, a plurality of external columns evenly arranged around the central column, upper horizontal support, lower horizontal supports, upper chord pipes, middle chord pipes, lower chord pipes, and inclined braces. The central column and the outer columns have the same structure which both include an upper pontoon arranged at the 0 upper part, a middle column fixedly connected to the bottom of the upper pontoon, and a lower pontoon fixedly connected to the bottom of the middle column. The invention installs a wind turbine on the basis of a semi-submersible platform. On the one hand, it promotes the development of aquaculture from offshore to open seas; and on the other hand, it breaks through the geographic limitations on aquaculture and 5 wind power generation (FIGURE 1) 8 2 FIG.1 82 81 13 92 1891 FIG.2 1/4

Description

2
FIG.1
82
81
13 92 1891
FIG.2
1/4
A STRUCTURE FOR COUPLING AN OFFSHORE FLOATING WIND TURBINE AND A SEMI-SUBMERSIBLE AQUACULTURE PLATFORM FIELD OF THE INVENTION
The invention relates to the technical field of aquaculture platforms, and in particular to a novel structure in which an offshore floating wind turbine and a semi-submersible aquaculture platform are coupled.
BACKGROUND OF THE INVENTION
The existing wind power facilities are mostly located on land and near the coast, and the site selection is extremely strict. However, large-scale aquaculture platforms are mostly located in the open sea far away from the coast. It is extremely difficult and costly to lay submarine cables to supply power from land or near the coast. In addition, with the increasing saturation of coastal aquaculture facilities and the destruction of the ecological environment, marine aquaculture is forced to develop from shallow seas to deep seas and promote the sustainable development of aquaculture. Therefore, whether it is aquaculture or wind power, the development from offshore to deep sea is the only way and also a strategic need.
SUMMARY OF THE INVENTION
According to the above technical problem, a novel structure in which an offshore floating wind turbine and a semi-submersible aquaculture platform are coupled is provided.
The technical means adopted in the present invention are as follows:
A structure for coupling offshore floating wind turbine and semi-submersible aquaculture platform includes a main frame, a wind turbine and a control room arranged on the top of the main frame, fish nets installed on the side walls and bottom of the main frame, and a plurality of anchor systems installed at the bottom of the main frame.
The wind turbine includes a wind turbine column, and turbine blades arranged at the top of the wind turbine column.
The anchor system includes mooring anchor chain and anchor. One end of the anchor chain is fixedly connected to the bottom of the main frame and the other end of the anchor chain is fixedly connected to the anchor. The anchor sinks to the seabed. The main frame includes a central column which arranged coaxially with the wind turbine column and a plurality of external columns which are evenly arranged around the central column. The top of the central column is fixedly connected with the bottom of the wind turbine column. The control room is arranged at the bottom of the wind turbine column. The control room is arranged at the bottom of the wind turbine column and built around the wind turbine column. The bottom outer edge of the control room is fixedly connected with the top of the outer column by an upper horizontal support. The bottom of the central column is fixedly connected with the bottom of the outer column by a lower horizontal support. The tops of the two adjacent external columns are fixedly connected by upper chord pipes, the middle parts of the two adjacent external columns are fixedly connected by middle chord pipes, and the bottoms of the two adjacent external columns are all connected by lower chord pipes. The two adjacent external columns are connected by two crossed inclined braces.
The central column and the outer columns have the same structure which both include an upper pontoon arranged at the upper part, a middle column fixedly connected to the bottom of the upper pontoon, and a lower pontoon fixedly connected to the bottom of the middle column. Further, the control room includes an instrument and equipment control room, and a waterproof solar power generation set on the top of the instrument and equipment control room. Further, the top of the equipment control room is a truncated cone shape. Further, the upper pontoon and the lower pontoon are both equipped with hydraulic control valves.
Further, the upper pontoon and the lower pontoon are respectively equipped with one water pump. The water pump is equipped with a two-way pipeline for water filling and drainage.
Further, the upper chord pipes, the upper horizontal support and the bottom outer edge of the control room are all provided with guardrails.
Further, the structure for coupling offshore floating wind turbine and semi-submersible aquaculture platform is subject to the combined effects of wind, waves and currents. To determine the optimal layout form of the structure of the present invention, the present invention establishes the following calculation method to calculate the structural load. The wind load acting on the floating wind turbine members should be calculated according to formula (1), the wave load acting on the fish cage members should be calculated according to formula (2), and the sea current load acting on the fish cage members should be calculated according to formula (3). The nets which subject to the wave and current loads are taken as the calculation object.
1 FF-CdFpAF 2
Wherein, FF is the wind load acting on the unit length of the floating wind turbine member, CdFis the wind resistance coefficient, p is the air density, UF is the design wind speed, AFis the projected area of the unit length member in the direction perpendicular to the wind.
F=1'F+F D =- 1 pC A 1u -x'Mu-x I+p(CM ,xn" ) (2)
Wherein, F, is the wave load acting on the unit length member, FDis the water resistance on the unit length member, F, is the inertial force acting on the unit length member, the inertial force of the net is negligible under the action of waves, pW is the sea water density, Aw is the projected area of the unit length member in the direction perpendicular to the vector (u-x'), Cd is the water resistance coefficient, C, is the additional mass coefficient, CM is the coefficient of inertia, C=C,+1, V is the volume of unit length member, U is the velocity of the water particles perpendicular to the axis of the member, u'is the acceleration of the water particles perpendicular to the axis of the member, x' is the velocity component of per unit length member perpendicular to the axis of the component, x" is the acceleration component of per unit length member perpendicular to the axis of the member.
F 2 = CpuC (g3)
Wherein, Fe is the current force acting on the unit length member, Ac is the projected area of the unit length member in the direction perpendicular to the ocean current, uc is the design flow velocity.
The shape of the main frame and the size of each pipe are determined by the above formula: Six external columns are evenly arranged around the central column, and the cross section of the main frame is a regular hexagon. The outer diameters of the upper pontoon and the lower pontoon are the same and larger than the outer diameter of the middle column. The upper pontoon and the lower pontoon have a gradual change section at one end close to the middle column, and are connected with the middle column through the gradual change section. The height H of the wind turbine column is 30 m - 70 m, and the length of the turbine blades is (1/3)H-(2/3)H.
The diameter D of the circle where the cross section of the main frame is located meets: 60 m D 120 m. The height h of the main frame is 40 m - 80 m.
The height h' of the upper pontoon and the lower pontoon meets: (1/4) h:h's (3/7) h.
The length L of the gradual change section meets: (1/7) h L (1/6) h. The outer diameters of the upper pontoon and the lower pontoon are respectively
3 m-10 m. The wall thicknesses of the upper pontoon and the lower pontoon are respectively 3 cm-6 cm.
The diameters of the upper chord pipes, the lower chord pipes, the upper horizontal support and the lower horizontal support are respectively 1.0 m-2.5 m. The diameter of the inclined brace is 0.5 m-2.0 m. The wall thicknesses of the upper chord pipes, the lower chord pipes, the upper horizontal support, the lower horizontal support and the inclined braces are respectively 3 cm -5 cm.
The mooring anchor chain includes anchor rope and anchor chain. The upper end of the anchor rope is fixedly connected to the bottom of the main frame. The lower end of the anchor rope is fixedly connected with the upper end of the anchor chain. The lower end of the anchor chain is fixedly connected with the anchor. The anchor rope is a steel core steel wire rope with a diameter of 30 mm to 42 mm, and the anchor chain is a secondary stud anchor chain with a diameter of 30 mm to 48 mm. In the present invention, the anchor system adopts the combination form of "anchor rope + anchor chain", which can overcome the shortcomings of anchor tension but not pulling resistance. The diameter of the anchor rope is 32 mm~42 mm, and the diameter of the anchor chain is between 30 mm~48 mm, which increases the strength of the anchor system and is not easy to twist.
In the present invention, to ensure that the coupling structure remains stable under environmental loads such as wind, waves and currents, a high holding power anchor with a wide stable fin is selected. The anchor claws are sharp, wide and long, and the gripping stability is good. It has good bottom grip performance under different geological conditions, and the grip coefficient is between 8-10.
In the present invention, a wind turbine is installed on the semi-submersible platform. On the one hand, this equipment promotes the development of aquaculture from offshore to open seas, and effectively solves a series of environmental problems caused by traditional aquaculture. On the other hand, it breaks through the geographic limitations on aquaculture and wind power and provides power guarantee for the automation and intelligence of open sea aquaculture. By combining the wind power device with the semi-submersible aquaculture platform, it not only avoids the huge cost of building a wind turbine and aquaculture platform, respectively, but also generates clean energy for the platform to use through wind power generation without polluting the environment. In addition, to supplement the power consumption of the platform, a wind turbine-shaped solar power device is arranged on the top of the truncated cone of the control room to generate clean energy.
In the present invention, to be able to accurately control the heave of the platform, and to achieve maintenance and working status, seven pontoons are arranged on the upper and lower parts of the platform, respectively. And one in the middle and six along the circumference. In the maintenance state, the draught of platform is less, and the water pump is controlled to drain from the pontoon to achieve the specified draught of maintenance. In the working state, the water pump can be controlled to fill the lower or upper pontoon with water and make the platform reach the specified draught. To ensure the stability and safety of the platform when encountering severe winds and waves, it is also possible to control the water volume in the pontoon to increase the draught of the platform and reach an appropriate position. In addition, the pontoons are not connected to each other. Even if one pontoon is damaged, it will not affect the normal operation of the other pontoons and cause the sinking of the platform.
In the present invention, to maintain the platform in a relatively stable state under large winds and waves, preferably there are four anchor systems, that is, a four-point anchor system is used. The platform is anchored to the seabed by mooring anchor chains to limit its movement and ensure the stability of the platform and the safety of the staff. In addition, the main frame is made of anti-corrosion steel, which has greater rigidity and strength. Under the action of wave current, the fish nets fixed on the main frame produces limited deformation, maintains a larger aquaculture space, and improves the aquaculture efficiency.
Based on the above reasons, the present invention can be widely promoted in fields such as aquaculture platforms.
BRIEF DESCRIPTION OF THE DRAWINGS
To more clearly illustrate the embodiments of the present invention or existing technical solutions, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.
Fig. 1 is a schematic structural diagram of a novel structure for coupling an floating wind turbine and a semi-submersible aquaculture platform in an embodiment of the present invention (fish nets removed).
Fig. 2 is a side view of a novel structure for coupling an floating wind turbine and a semi-submersible aquaculture platform in an embodiment of the present invention (fish nets removed).
Fig. 3 is a schematic diagram of the structure of the main frame and the wind turbine in the embodiment of the present invention (fish nets removed).
Fig. 4 is a side view of the main frame in an embodiment of the present invention (fish nets removed).
Fig. 5 is a schematic diagram of the internal control valve of the lower pontoon in an embodiment of the present invention (with fish nets).
Fig. 6 is a schematic diagram of the water pump in the upper pontoon in an embodiment of the present invention.
Fig. 7 is a schematic diagram of a mooring chain in an embodiment of the present invention.
Wherein, 1, Main frame; 11, Central column; 12, External column; 13, Upper horizontal support; 14, Lower horizontal support; 15, Upper chord pipes; 16, Middle chord pipes; 17, Lower chord pipes; 18, Inclined brace; 2, Control room; 21,
Instrument and equipment control room; 22, Waterproof solar power generation device; 3, Fish nets; 4, Upper pontoon; 41, Gradation section; 42, Hydraulic control valve; 43, Water pump; 44, Two-way pipeline; 5, Lower pontoon; 6, Middle column; 7, Guardrail; 8, Wind turbine; 81, Wind turbine column; 82, Turbine blade; 9, Anchor system; 91, Anchor; 92, Mooring chain; 93, Anchor rope; 94, anchor chain.
DETAILED DESCRIPTION
It should be noted that the embodiments of the present invention and the features in the embodiments can be combined if there is no conflict. The invention will be explained in detail by referring to the attached drawings and combining embodiments.
To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and/or "including" are used in this specification, they indicate that there are features, steps, operations, devices, components, and/or combinations thereof.
Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but under appropriate circumstances, the technologies, methods, and equipment should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary rather than limiting. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.
In the description of the present invention, it needs to be understood that orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom", etc. indicate the orientation or the positional relationship is usually based on the positional or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the pointed device or element must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation of the protection scope of the present invention: the directional words "inner and outer" refer to the inner and outer parts relative to the contour of each component itself.
For ease of description, spatially relative terms such as "above" etc. can be used here to describe as shown in the figure. Shows the spatial positional relationship between one device or feature and other devices or features. It should be understood that the spatially relative terms are intended to encompass different orientations in use or operation other than the orientation of the device described in the figure. For example, if the device in the figure is inverted, then the device described as "above the other device or structure" or "above the other device or structure" will then be positioned as "below the other device or structure" or "on it's under the device or structure". Thus, the exemplary term "above" can include both orientations "above" and "below". The device can also be positioned in other different ways (rotated by 90 degrees or in other orientations), and the relative description of the space used here is explained accordingly.
In addition, it should be noted that the use of terms such as "first" and "second" to define parts is only for the convenience of distinguishing corresponding parts. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.
As shown in Fig. 1-7, a novel structure for coupling an offshore floating wind turbine and a semi-submersible aquaculture platform includes a main frame 1, a wind turbine 8 and a control room 2 arranged on the top of the main frame 1, fish nets 3 installed on the side walls and bottom of the main frame, and multiple anchor systems 9 installed on the bottom of the main frame 1.
The wind turbine 8 includes a wind turbine column 81 and turbine blades 82 arranged at the top end of the wind turbine column 81. The wind turbine column is 60 m high, the turbine blade is 40 m long, and an energy storage device is installed in the wind turbine column. The anchor system 9 includes mooring anchor chains 92 and anchors 91. The mooring anchor chain 92 includes an anchor rope 93 and an anchor chain 94. The upper end of the anchor rope 93 is fixedly connected to the bottom of the main frame 1. The lower end of the anchor rope 93 is fixedly connected to the upper end of the anchor chain 94, the lower end of the anchor chain 94 is fixedly connected to the anchor 91, and the anchor 91 sinks to the seabed. The anchor rope 93 is a steel core wire rope with a diameter of 30 mm to 42 mm. The anchor chain 94 is a secondary stud anchor chain with a diameter of 30 mm to 48 mm. The control room 2 includes an instrument and equipment control room 21 and a waterproof solar power generation device 22 installed on the top of the instrument and equipment control room 21. The top of the equipment control room 21 is a truncated cone shape. The equipment control room 21 also provides living space for the staff. The waterproof solar power generation device 22 supplies power to the electrical equipment on the platform. The control room has a diameter of 16m and a height of 4m.
The main frame 1 includes a central column 11 and six external columns 12 which are evenly arranged around the central column 11. The top of the central column 11 is fixedly connected with the bottom of the control room 2. The cross-section of the main frame 1 is a regular hexagon, and the diameter of the circle where the regular hexagon is located is 100 m, and the height of the central column is 60 m. The outer edge of the bottom of the control room 2 and the top of the outer column 12 are welded and fixed by an upper horizontal support 13. The upper horizontal support 13 has a diameter of 2 m and a length of 50 m. The bottom of the central column 11 and the bottom of the outer column 12 are welded and fixed by a lower horizontal support 14. The lower horizontal support 14 has a diameter of 2 m. The tops of the two adjacent external columns 12 are welded and fixed by the upper chord pipe 15 which has a diameter of 2 m. The middle parts of the two adjacent external columns 12 are welded and fixed by a middle chord pipe 16 which has a diameter of 2 m. The bottoms of the two adjacent external columns 12 are both welded and fixed by the lower chord pipe 17 which has a diameter of 2 m. Two cross-arranged inclined braces 18 are welded and fixed between the two adjacent external columns 12 and the inclined brace 18 has a diameter of 1 m. The wall thicknesses of the upper horizontal support 13, the lower horizontal support 14, the upper chord pipe 15, the middle chord pipe 16, the lower chord pipe 17, and the inclined brace 18 are respectively 2 cm-6 cm.
The central column 11 and the external column 12 have the same structure, and both include an upper pontoon 4, a middle column 6 fixedly connected to the bottom of the upper pontoon 4, and a lower pontoon 5 fixedly connected to the bottom of the middle column 6. The outer diameters of the upper pontoon 4 and the lower pontoon 5 are the same and both are larger than the outer diameter of the middle column 6. The upper pontoon 4 and the lower pontoon 5 have a gradual change section 41 at one end close to the middle column 6 , and is connected to the middle column 6 through the gradual change section 41. The diameter of the upper pontoon 4 and the lower pontoon 5 are both 5 m, the diameter of the middle column 6 is 2 m, and the diameter of the transition section 41 is gradually changed from 5 m to 2 m.
Further, the upper pontoon 4 and the lower pontoon 5 are respectively equipped with hydraulic control valve 42.
Further, the upper pontoon 4 and the lower pontoon 5 are respectively equipped with water pump 43. The water pump 43 is equipped with a two-way pipeline 44 for water filling and drainage.
Further, the upper chord pipes 15, the upper horizontal support 13 and the bottom outer edge of the control room 2 are all provided with guardrails 7.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit it, although the present invention has been described in detail about the previous embodiments. Those of ordinary skill in the art should understand that they can still modify the technical solutions described in the previous embodiments, or equivalently replace some or all of the technical features. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A structure for coupling offshore floating wind turbine and semi-submersible aquaculture platform, comprising:
a main frame;
a wind turbine and a control room arranged on the top of the main frame;
fish nets installed on the side walls and bottom of the main frame; and
a plurality of anchor systems installed at the bottom of the main frame;
wherein the wind turbine comprises a wind turbine column, and turbine blades arranged at the top of the wind turbine column;
wherein the anchor system comprises mooring anchor chain and anchor; one end of the anchor chain is fixedly connected to the bottom of the main frame, and the other end of the anchor chain is fixedly connected to the anchor; the anchor sinks to the seabed; wherein the main frame comprises a central column arranged coaxially with the wind turbine column, and a plurality of external columns evenly arranged around the central column; the top of the central column is fixedly connected with the bottom of the wind turbine column; the control room is arranged at the bottom of the wind turbine column; wherein the bottom outer edge of the control room is fixedly connected with the top of the outer column by an upper horizontal support; the bottom of the central column is fixedly connected with the bottom of the outer column by a lower horizontal support; the tops of the two adjacent external columns are fixedly connected by upper chord pipes, the middle parts of the two adjacent external columns are fixedly connected by middle chord pipes, and the bottoms of the two adjacent external columns are fixedly connected by lower chord pipes; the two adjacent external columns are connected by two crossed inclined braces;
wherein the central column and the outer columns have the same structure which both comprise an upper pontoon arranged at the upper part, a middle column fixedly connected to the bottom of the upper pontoon, and a lower pontoon fixedly connected to the bottom of the middle column.
2. The structure for coupling offshore floating wind turbine and semi-submersible aquaculture platform according to claim 1, wherein the control room comprises an instrument and equipment control room, and a waterproof solar power generation set on the top of the instrument and equipment control room.
3. The structure for coupling an offshore floating wind turbine and a semi-submersible aquaculture platform according to claim 2, wherein the top of the instrument and equipment control room is a truncated cone shape.
4. The structure for coupling an offshore floating wind turbine and a semi-submersible aquaculture platform according to claim 1, wherein the upper pontoon and the lower pontoon are both equipped with hydraulic control valves.
5. The structure for coupling an offshore floating wind turbine and a semi-submersible aquaculture platform according to claim 1 or 4, wherein the upper pontoon and the lower pontoon are respectively equipped with one water pump; the water pump is equipped with a two-way pipeline for water filling and drainage.
6. The structure for coupling an offshore floating wind turbine and a semi-submersible aquaculture platform according to claim 1, wherein the upper chord pipes, the upper horizontal support and the bottom outer edge of the control room are all provided with guardrails.
7. The structure for coupling an offshore floating wind turbine and a semi-submersible aquaculture platform according to claim 1, wherein six external columns are evenly arranged around the central column, and the cross section of the main frame is a regular hexagon.
8. The structure for coupling an offshore floating wind turbine and a semi-submersible aquaculture platform according to claim 1, wherein the outer diameters of the upper pontoon and the lower pontoon are the same and larger than that of the middle column; the upper pontoon and the lower pontoon have a gradual change section at one end close to the middle column, and are connected with the middle column through the gradual change section.
9. The structure for coupling an offshore floating wind turbine and a semi-submersible aquaculture platform according to claim 8, wherein, a height H of the wind turbine column is 30 - 70 m, and a length of the turbine blades is (1/3)H - (2/3)H; a diameter D of the circle where the cross section of the main frame is located meets 60 m D 120 m; a height h of the main frame is 40 - 80 m; a height h' of the upper pontoon and the lower pontoon meets: (1/4) h: h's (3/7) h; a length L of the gradual change section meets (1/7) h L (1/6) h; outer diameters of the upper pontoon and the lower pontoon are 3 - 10 m; wall thicknesses of the upper pontoon and the lower pontoon are 3 - 6 cm; diameters of the upper chord pipes, the lower chord pipes, the upper horizontal support and the lower horizontal support are 1.0 - 2.5 m; a diameter of the inclined brace is 0.5 m-2.0 m; wall thicknesses of the upper chord pipes, the lower chord pipes, the upper horizontal support, the lower horizontal support and the inclined braces are 3 cm-5 cm.
10. The structure for coupling an offshore floating wind turbine and a semi-submersible aquaculture platform according to claim 1, wherein the mooring anchor chain comprises anchor rope and anchor chain; the upper end of the anchor rope is fixedly connected to the bottom of the main frame, and the lower end of the anchor rope is fixedly connected with the upper end of the anchor chain; the lower end of the anchor chain is fixedly connected with the anchor; the anchor rope is a steel core steel wire rope with a diameter of 30 to 42 mm; and the anchor chain is a secondary stud anchor chain with a diameter of 30 to 48 mm.
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